如何捕获此 Python 异常：错误：[Errno 10054] 远程主机强制关闭现有连接
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How to catch this Python exception: error: [Errno 10054] An existing connection was forcibly closed by the remote host
提问by SilentSteel
I am trying to catch this particular exception (and only this exception) in Python 2.7, but I can't seem to find documentation on the exception class. Is there one?
我试图在 Python 2.7 中捕获这个特定的异常（并且只有这个异常），但我似乎无法找到有关异常类的文档。有吗？
[Errno 10054] An existing connection was forcibly closed by the remote host
My code so far:
到目前为止我的代码：
try:
# Deleting filename
self.ftp.delete(filename)
return True
except (error_reply, error_perm, error_temp):
return False
except # ?? What goes here for Errno 10054 ??
reconnect()
retry_action()
采纳答案by user2489743
The error type is socket.error, the documentation is here. Try modiffying your code like this:
错误类型是 socket.error，文档在这里。尝试像这样修改你的代码：
import socket
import errno
try:
Deleting filename
self.ftp.delete(filename)
return True
except (error_reply, error_perm, error_temp):
return False
except socket.error as error:
if error.errno == errno.WSAECONNRESET:
reconnect()
retry_action()
else:
raise
回答by giovanni
You may try doing something like :
您可以尝试执行以下操作：
try:
# Deleting filename
self.ftp.delete(filename)
return True
except (error_reply, error_perm, error_temp):
return False
except Exception, e:
print type(e) # Should give you the exception type
reconnect()
retry_action()
回答by tdelaney
When you want to filter exceptions, the first step is to figure out the exception type and add it to an except clause. That's normally easy because python will print it out as part of a traceback. You don't mention the type, but it looks like socket.gaierror to me, so I'm going with that.
当您要过滤异常时，第一步是找出异常类型并将其添加到一个 except 子句中。这通常很容易，因为 python 会将它作为回溯的一部分打印出来。你没有提到类型，但对我来说它看起来像 socket.gaierror，所以我会这样做。
The next step is to figure out what is interesting inside of the exception. In this case, `help(socket.gaierror)' does the trick: there is a field called errno that we can use to figure out which errors we want to filter.
下一步是找出异常内部的有趣之处。在这种情况下，“help(socket.gaierror)”可以解决问题：有一个名为 errno 的字段，我们可以使用它来确定要过滤哪些错误。
Now, rearrange your code so that the exception is caught inside a retry loop.
现在，重新排列您的代码，以便在重试循环中捕获异常。
import socket
retry_count = 5 # this is configured somewhere
for retries in range(retry_count):
try:
# Deleting filename
self.ftp.delete(filename)
return True
except (error_reply, error_perm, error_temp):
return False
except socket.gaierror, e:
if e.errno != 10054:
return False
reconnect()
return False
